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1 Montomoli M, "Validation of a food frequency questionnaire for nutritional calcium intake assessment in Italian women" 56 : 21-30, 2002
2 Osowski JM, "Validation of a food frequency questionnaire for assessment of calcium and bone-related nutrient intake in rural populations" 107 : 1349-1355, 2007
3 Hung A, "Validation of a calcium assessment tool in postmenopausal Canadian women" 69 : 168-172, 2011
4 Rizzoli R, "The role of calcium and vitamin D in the management of osteoporosis" 42 : 246-249, 2008
5 Landis JR, "The measurement of observer agreement for categorical data" 33 : 159-174, 1977
6 Delaney MF, "Strategies for the prevention and treatment of osteoporosis during early postmenopause" 194 : S12-S23, 2006
7 Masson LF, "Statistical approaches for assessing the relative validity of a food-frequency questionnaire: use of correlation coefficients and the kappa statistic" 6 : 313-321, 2003
8 Willett W., "Nutritional epidemiology" Oxford University Press 1998
9 Ministry of Health & Welfare, "Korea health statistics 2007: Korea national health and nutrition examination survey" Korea Centers for Disease Control and Prevention 2008
10 Lanham-New SA, "Importance of calcium, vitamin D and vitamin K for osteoporosis prevention and treatment" 67 : 163-176, 2008
11 Varenna M, "Effects of dietary calcium intake on body weight and prevalence of osteoporosis in early postmenopausal women" 86 : 639-644, 2007
12 The Korean Nutrition Society, "Dietary reference intakes for Koreans" The Korean Nutrition Society 2005
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23 BC Dairy Association, "Calcium calculator"
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